l ecirc n u0111 u1ec9nh c ugrave ng g u1ea5u d acirc m tuy u1ec7t u0111 u1ec9nh 69
u0110it con vk h agrave ng ngon
u0110 u1ee5 v u1ee3 ch u1ed3ng
B u1eafn tinh v agrave o b u01b0 u1edbm v u1ee3 iu